Greasing agent



Patented June 6, 1944" UNITED" STATES assess:

PATENT, orrics GREASING aonn'r Gustav Hetz, Ohemnitz, Germany; vested inthe Alien Property Custodian No Drawing. Application March 24, 1941,Serial No. 384,803. In Germany March 6, 1940 Claims.

has also been proposed to use glycerol or diethylene glycol instead ofthe usual greasing agents based on fatty acid, fatty oils or mineraloils.- Glycerol and diethylene'glycol give a certain slip to the -iibersto be spun, however these agents are not able to retain moisturesumciently and to produce suflicient adhesion between thesingliiaifibers oi the spun thread. These drawbacks are importantespecially when cellulose staple fiber or regenerated wool or waste,which contains many short iiberaare admixedto the spinhing material.Compared, with oleic acid; glyc-, erol and diethylene glycol have thedrawback, that they have themselves no washing and fulling power. r

v It has now been found, that mixtures of watersoluble, bivalent orpolyvalent aliphatic alcohols or ether alcohols or of water-solublehigh-boiling hydroaromatic or heterocyclic alcohols on the one side andof water-soluble salts of cellulose ether carbonic acids, which can alsobe called cellulose n-butyl-glycerol ether and its homologues. How- Iever, also alcohols of lower viscosity, for example cyclohexanol ortetrahydrofurfuryl alcohol, are suitable. Instead of pure alcohols theremay be used technical mixtures containing such al- 0011015 for examplethe mixtures received by catalytic hydrogenation of sugars, Thesemixtures contain, mostly or in a high percentage, propane cellulosehydroxyparaflin monocarboxylic acids,

can be used. 1

In somecases the 'eflect of the greasing agents 55 can be improved by anaddition 01 alkali salts.

of lignin-sulfonic'acid.

- The new greasing agents advantages! 5 .(1) Far better retaining ofmoisture during the spinning process.

show the following (2) They produce good adhesion between the singularfibers in the spun thread; this is particularly important when wastecontaining short iibers is spun. (3) Easier processing as compared vicesare unnecessary. V (4) Only approximatelyv one-half of the greasingagents according to the invention is I necessary as compared with. thegreasills The proportion between the alcohol or ether alcohol and thecellulose ether carboxylic acid can 25 be in the range between 3:1 and1:3, that is to say, that one may use for example '15 parts by ,weight'01' alcohol or ether alcohol and 25 parts by weight oi a salt of acellulose ether carboxylic acid, or vice versa. It also ligninsulfonicacid is so used, the sumoi the weights of alcohol or ethera andcellulose ether carboxylic acid salt b can be between 75 percent topercent'of the total weight, the weight ,of the ligninsulfonig acidbeing 25 to 75 percent 01 the total weight. The proportion betweenalcohol or ether alcohol and the salt of-cellulose ether carboxylic acidin the greasing agents containing also ligninsulfonic acid may likewisebe inthe range between 3:1

and 1:3.

cases to be very advantageous (the parts are by weight) Parts (1)Technical propandiol 86'! Sodium salt of cellulose glycoliic acid--- 133(2). Technical propendiol 517 Sodium salt of technical ligninsulionicacid 345 Sodium salt oicellulose glycoliic acid; 138 so (3) A technicalmixture of glycols made by catalytic hydrogenation of glucose at highpressure"; 517 Sodium salt or technical ligninsulionic acid 345 Sodiumsalt of cellulose glycoliic acid 138 with my" emulsions, as allauxiliary agents and de- The following proportions have proved in manya,sso,7sa I aromatic and heterocyclic alcohols, water-soluble Accordingto the spinning method and to the character of the fibers to be spun,0.5% to 5% of the water-iree' greasing agent, calculated on the weightoi. the fibers. are dissolved in the necessary quantity oi cold or warmwater, that is approximately 4 to 10 times the amount ot the water-freegreasing agent. The solution is distributed finely and uniformly on thefibers either by hand or by 'a suitable sprinkling device. The greasedbatch of fibers is then mixed in a mixingwillow. Inthe worsted-spinningprocess, the solution of the greasing agent is drizzled or sprinkled onthe silver in the usual manner.

The greasing agents can be used for greasing fibers oi any kind beforespinning. 'For example,

they can be used in the manufacture of army-- cloth, oi blankets made ofwool or its substitutes,

in the spinning of hair yarn, carpet yarn, in the spinning of vicugna orwaste fibers using the cardspecial yarns. The application of thegreasing I claim:

1. Ina process for greasing fibers beiore spin- I ning, the use of amixture comprising a compound selected irom the group consistingoi'bivalent and polyvalent aliphatic alcohols and ing process and in theworsted-spinning process for making yarns ior weaving, knitting and.

salts of cellulose hydroxyparafiin monccarboxylic acids, andwater-soluble salts of ligninsultonic acid.

2. In a process 0! greasing fibers beiore ning, the use of a mixturecomprising technical propandiol a, and the sodium salt of celluloseglycollic acid b, and the'sodium salt oi technical ligninsulfonic acid0, proportion of o to b being from 3:1 to 1:3 and; the proportionbetween (1+1; and 0 being from 3:1 to hit.

3. A greasing agent for fibers, comprising a mixture of acomp'oundselected from the group consisting of bivalent and polyvalent aliphaticalcohols and ether alcohols, water-soluble high boiling hydroaromatic'and heterocyclic alcohols, a water-soluble salt of a cellulosehydroxyparamn monocarboxylic acid, and a water soluble salt ofligninsuli'onic acid.

4. A greasing agent comprising a mixture of technical glycols', made bycatalytic hydrogenation of sugars at high pressure, the sodium salt ofcellulose glycollic acid, sodium salt oi ligninsulionic acid, the ratiobeing approximately (by'welght) 52 parts technical glycols, 14 partssodium salt of cellulose glycollic acid, and}! parts of the sodium saltor ligninsulionic acid.

- 5. A greasing agent as claimed in claim 4, disso solved in water.

- GUSTAV m.

spin-

